Focus on a cell. Please note - this property requires the KeyTable extension for DataTables.
If the selected cell is not in the DataTable's current page, the paging will be adjusted to make it visible and the table redraw.
If a different cell has focus when this method is called, it will cause that cell to be blurred before this one is selected.
Focus on the selected cell.
DataTables API instance
Focus on the first cell in the table:
table.cell( ':eq(0)' ).focus();
The following options are directly related and may also be useful in your application development.